William Lyon Mackenzie's Correspondence With Millard Fillmore

Mackenzie's loyalty to his old friend, however, remained staunch and true even in exile.

In 1838 he had some correspondence with Mr. Millard Fellmore [sic] (afterwards President of the United States) who at the time was practising law in Buffalo and who had been retained by the Randall heirs in the United States to endeavour to obtain some relief for them. [Source]